JP2007095481A - Light irradiation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light irradiation device capable of illuminating inside the room by irradiating sunlight into the room on the nearly north side of a construction, capable of reducing restriction in installing the light irradiation device and capable of realizing downsizing. <P>SOLUTION: The light irradiation device 1 is installed at a two-storied residence 10. This light irradiation device 1 is provided with a cabinet 5, a daylighting part 6 capable of receiving sunlight from the east side and the west side, a light emitting part 8 to irradiate (emit light) the sunlight which has been received via the daylighting part 6 into the room 34 on the first floor, and a light guiding means 7 which light-guides the sunlight from the daylighting part 6 to the light emitting part 8 and which is constituted of a plurality of reflecting plates. The daylighting part 6 is on north side of the residence 10 and positioned on the lower side of vertical direction than a ceiling 272 of that second floor. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a light irradiation apparatus for irradiating light in a room of a building.

  2. Description of the Related Art Conventionally, there has been known a light irradiation device that takes sunlight into a building such as a house and irradiates the room with the sunlight.

  Such a light irradiation device emits (irradiates) the light guided by the light duct, the light duct that guides the light collected through the light collection section, and the light guided by the light duct into the room. (For example, refer to Patent Documents 1 and 2). In order to take in more sunlight (in order to collect sunlight from the south side), the daylighting part is installed on the south wall or south roof so that it faces the south side. It is installed so as to protrude above the roof.

  By the way, for example, in the case of a two-story house, the room on the north side, in particular the room on the north side on the first floor, is dark during the day, so that the light irradiation device irradiates the room with sunlight to brighten the room. There is a request.

  However, in the conventional light irradiation device, when sunlight is irradiated to the north side of a two-story house, particularly the north side of the first floor, on the south side wall, the south side roof, the top of the roof, etc. An optical duct has to be arranged from the provided daylighting unit to the light emitting unit provided on the north side of the first floor. Therefore, there are many restrictions in arranging the optical duct. Further, there are disadvantages that the overall shape of the optical duct is complicated, the length of the optical duct is increased, and the entire apparatus is enlarged. Further, if the length of the light duct is long, the light collected by the light emitting part is reflected many times in the light duct and reaches the light emitting part, so that the light is attenuated by the reflection.

JP 2002-270014 A JP 2004-39318 A

  An object of the present invention is a light irradiation device that can irradiate sunlight in a room on the approximately north side of a building and illuminate the room, and to reduce restrictions on installing the light irradiation device An object of the present invention is to provide a light irradiating device that can be reduced in size.

Such an object is achieved by the present inventions (1) to (14) below.
(1) a (provided that 2 ≦ a) the building is located on the north side of the building, and is provided below the b + 1 (provided that 1 ≦ b ≦ a-1) floor vertically. A daylighting unit capable of daylighting from the east side and / or substantially west side;
A light emitting part that is provided in a predetermined room on the b floor of the building and emits sunlight collected through the daylighting part into the room;
A light irradiation apparatus comprising: a plurality of reflecting surfaces; and a light guide unit configured to guide sunlight from the daylighting unit to the light emitting unit.

(2) The light irradiation apparatus according to (1), wherein the b floor is the a-1 floor.
(3) a (provided that 2 ≦ a) is substantially north of a floor building, and is provided vertically below the ceiling of the b + 1 (provided that 1 ≦ b ≦ a−1) floor. A daylighting unit capable of daylighting from the east side and / or substantially west side;
A light emitting part that is provided on a floor of a predetermined room on the b + 1 floor of the building, and emits sunlight collected through the daylighting part into the room;
A light irradiation apparatus comprising: a plurality of reflecting surfaces; and a light guide unit configured to guide sunlight from the daylighting unit to the light emitting unit.

  (4) The said daylighting part is a light irradiation apparatus in any one of said (1) thru | or (3) located in the vicinity of the floor of the said b + 1 floor.

(5) has a housing,
The light guide means includes a first reflecting surface provided on an inner surface of a substantially west side of the housing;
A second reflecting surface provided on the inner surface of the housing on the substantially east side;
The light irradiation apparatus according to any one of (1) to (4), further including a third reflecting surface provided on an inner surface on a lower side in the vertical direction of the casing.

(6) In the light guide unit, sunlight collected from the substantially east side in the daylighting unit is reflected by the first reflecting surface toward the third reflecting surface, and the reflected light is reflected by the third reflecting surface. Reflected toward the inside of the building with the reflective surface of
Sunlight collected from substantially the west side in the daylighting part is reflected by the second reflecting surface toward the third reflecting surface, and the reflected light is reflected by the third reflecting surface inside the building. The light irradiation apparatus according to (5), wherein the light irradiation apparatus is configured to reflect toward the surface.

  (7) The third reflection surface according to (5) or (6), wherein the third reflection surface is provided along the substantially east-west direction between the first reflection surface and the second reflection surface. Light irradiation device.

  (8) The light irradiation device according to any one of (5) to (7), wherein the casing includes a wall portion having a light shielding property on a substantially north side thereof.

  (9) The light irradiation device according to any one of (5) to (8), wherein the daylighting unit is provided on the upper side in the vertical direction of the casing.

(10) The daylighting portion includes a first plate-like portion having light permeability that is inclined toward the east side so that the east side is lowered from the central portion in the substantially east-west direction, and the west side from the central portion. And a second plate-like portion that is inclined substantially toward the west so that the
The light according to (9), wherein the light is collected from the substantially east side through the first plate-shaped portion, and the sunlight is collected from the substantially west side through the second plate-shaped portion. Irradiation device.

  (11) The light irradiation device according to (10), wherein an angle formed by the first plate-like portion and the second plate-like portion is set to be larger than 90 °.

  (12) A portion of the housing in which the first reflecting surface, the second reflecting surface, and the third reflecting surface are housed is provided on an outer surface of an outer wall portion on a substantially north side of the building. The light irradiation apparatus according to any one of (5) to (11) above.

  (13) The above (1), which includes an artificial light source, and includes artificial light irradiation means for driving the artificial light source and irradiating artificial light emitted from the artificial light source into the room from the light emitting unit. Thru | or the light irradiation apparatus in any one of (12).

  (14) The light irradiation apparatus according to (13), wherein the artificial light source is a light emitting diode.

  According to the present invention, sunlight (light) is irradiated (radiated) into a room on the b (provided that 1 ≦ b ≦ a−1) floor on the substantially north side of a (but 2 ≦ a) floor building. Then, when the room is illuminated, a daylighting unit capable of daylighting from the substantially east side and / or the substantially west side is provided on the substantially north side of the building and below the b + 1 floor ceiling in the vertical direction. . As a result, for example, it is not necessary to route (arrange) the light guiding means to the housing space or shed space on the south side, and restrictions on installing the light irradiation device can be reduced. The same effect can be obtained when the interior of the building on the b + 1 floor on the almost north side is illuminated with sunlight to illuminate the interior.

  In addition, according to the present invention, the length of the light guide means can be shortened (the light guide means can be made compact), and the entire apparatus can be downsized. In addition, since the length of the light guide means can be shortened, the number of reflections of light in the light guide means until the light collected by the daylighting unit reaches the light emission part can be reduced, Light dimming can be suppressed, and the collected light can be efficiently radiated indoors.

  Further, by collecting sunlight from approximately the east side, the room can be illuminated brightly in the morning when the room is relatively dark during the daytime.

  Further, by collecting sunlight from the substantially west side, the room can be illuminated brightly in the evening when the room is relatively dark during the daytime.

Hereinafter, the light irradiation apparatus of this invention is demonstrated in detail based on suitable embodiment shown to an accompanying drawing.
In the first to third embodiments, typically, when the light irradiation device of the present invention is provided in a two-story house and the north room on the first floor is irradiated with sunlight (dissipates), In the fourth embodiment, a configuration example in a case where the light irradiation device of the present invention is representatively provided in a two-story house and sunlight is emitted (light emitted) to the room on the north side of the second floor will be described.

1 is a cross-sectional view showing a schematic structure of a house as a building provided with a first embodiment of the light irradiation device of the present invention, FIG. 2 is a cross-sectional view showing the light irradiation device shown in FIG. 2A is a sectional side view, FIG. 2B is a sectional view taken along the line AA in FIG. 2A, and FIGS. 3, 4 and 5 are respectively shown in FIG. It is a perspective view which shows a light irradiation apparatus.
In addition, in FIG. 1, the side view is shown about the light irradiation apparatus.

  3 to 5, the light irradiation device is schematically illustrated as if each internal reflection plate that cannot be seen from the outside is visible. In order to easily distinguish each reflecting plate from other portions, each reflecting plate is hatched.

  Moreover, in FIGS. 1-5, the up-down direction is a vertical direction, and the direction (azimuth | direction) of the east-west north-south is shown by the arrow in the figure.

  For convenience of description, in FIGS. 1 to 5, the upper side is described as “upper” and the lower side is described as “lower”.

  As shown in FIG. 1, the house (building) 10 is a two-story building. The second floor room 31 on the south side, the first floor room 32 on the south side, the second floor room 33 on the north side, and the first floor room on the north side. It has a housing 20 that defines a chamber 34, a not-shown entrance, a corridor not shown, and the like. The casing 20 includes a roof portion 21, an outer wall portion 22, a heat insulating material 23 laminated on the inner surface of the roof portion 21 and the outer wall portion 22, a base portion 24, an inner wall portion 251 that defines a chamber 31, and a ceiling 252. And the floor 253, the inner wall 261 defining the chamber 32, the ceiling 262 and the floor 263, the inner wall 271 defining the chamber 33, the ceiling 272 and the floor 273, the inner wall 281 defining the chamber 34, and the ceiling 282 and a floor 283. A housing space 40 is formed inside the housing 20.

  The enclosure space 40 includes a hut space 41, an underfloor space 42, a toilet space 43, and inner wall spaces (inner wall cavities) 44, 45, 46. That is, the enclosure space 40 is a continuous space (communication space) formed by communicating the cabin space 41, the underfloor space 42, the toilet space 43, and the inner wall spaces 44, 45, 46.

  The cabin space 41 is a space formed below the roof, that is, a space formed between the roof portion 21 and the upper portion of the ceiling 252 of the chamber 31 and the upper portion of the ceiling 272 of the chamber 33.

  The underfloor space 42 is a space formed between the base 24 and the lower portion of the floor 263 of the chamber 32 and the lower portion of the floor 283 of the chamber 34.

  Further, the toilet space 43 is a space formed between adjacent upper and lower floors (between the first floor and the second floor in this embodiment), that is, a lower portion of the floor 253 of the chamber 31 and a ceiling 262 of the chamber 32. It is a space formed between the upper part and the lower part of the floor 273 of the chamber 33 and the upper part of the ceiling 282 of the chamber 34.

  The inner wall space (inner wall cavity) 44 is a space formed along the vertical direction between the outer wall portion 22 and the inner wall portions 251 and 261, and the inner wall space 45 includes the inner wall portions 251 and 261 and the inner wall. A space formed along the vertical direction between the portions 271 and 281, and the inner wall space 46 is a space formed along the vertical direction between the outer wall portion 22 and the inner wall portions 271 and 281. .

  On the north side of the house 10, there is provided a light irradiation device 1 that irradiates (emits) sunlight (light) into a room 34 on the first floor on the north side and illuminates the inside of the room 34.

  As shown in FIG. 2 and FIG. 3, the light irradiation device 1 is unitized and includes a casing (casing) 5, a lighting section 6 that is provided in the casing 5, and collects sunlight, and a lighting section 6. The light emitting unit 8 irradiates (emits light) the sunlight collected through the light into the chamber 34 and the light guide unit 7 that guides the sunlight from the light collecting unit 6 to the light emitting unit 8.

  The housing 5 has a substantially pentagonal shape (upper side is substantially triangular) when viewed from the north side, and a daylighting unit 6 provided with a daylighting unit 6 on the upper side in the vertical direction (hereinafter simply referred to as “upper side”). The side casing 51 and the light emitting part side casing in which the outer shape when viewed from the north side is substantially rectangular and the light emitting part 8 is provided on the lower side in the vertical direction (hereinafter simply referred to as “lower side”). 52. The light emitting part side casing 52 is located on the south side of the lower end of the daylighting part side casing 51, and the hollow part (inside) of the daylighting part side casing 51 and the hollow part of the light emitting part side casing 52 are: Communicate with each other. Note that the housing 5 may be formed by integrally forming the daylighting unit side casing 51 and the light emission unit side casing 52, and joining the separate daylighting unit side casing 51 and the light emission unit side casing 52 to each other. It may be formed by (fixing).

  Further, the daylighting section side casing 51 of the housing 5 is located outside the house 10. That is, the lighting part side casing 51 is installed on the outer surface of the outer wall part 22 on the north side of the house 10.

  On the other hand, the light emission part side casing 52 is located inside the house 10. That is, the light emitting part side casing 52 is inserted through a hole formed at a position corresponding to the space 43 of the housing 20 on the north side of the house 10, and the lower part of the floor 273 of the chamber 33 and the ceiling 282 of the chamber 34. It is inserted in the space 43 between the upper part of the.

  The housing 5 is preferably insulated. That is, it is preferable that a heat insulating layer (heat insulating material) such as a heat insulating board (heat insulating plate) is provided on the inner surface of the housing 5. Thereby, dew condensation can be prevented.

  Moreover, the opening 511 is formed in the upper end of the lighting part side casing 51, and the lighting part 6 is provided in the upper end. That is, the daylighting unit 6 is installed at the upper end of the daylighting unit side casing 51 so as to close the opening 511.

  The daylighting unit 6 is disposed (positioned) below the ceiling 272 of the room 33 on the second floor on the north side, in the present embodiment, in the vicinity of the floor 273 of the room 33 (approximately the same height as the floor 273). ing).

  The daylighting portion 6 is configured by a plate body (light transmissive member) that is light transmissive and is bent (bent) at the center portion, and has an appearance of substantially “he” when viewed from the north side. It has a shape. That is, the daylighting unit 6 has a first plate-like portion 61 that is inclined toward the east side so that the east side is lowered from the central portion in the east-west direction, and from the central portion toward the west side so that the west side is lowered. It is comprised with the 2nd plate-shaped part 62 which inclines.

  The angle θ formed by the first plate-like portion 61 and the second plate-like portion 62 is not particularly limited, but is preferably set to be larger than 90 ° as in the illustrated example.

  In the daylighting unit 6, sunlight can be collected from the east side via the first plate-like part 61, and sunlight can be taken from the west side via the second plate-like part 62.

  In addition, as a constituent material of the lighting part 6, various glass, various resin, etc. can be used, for example.

  An opening 521 is formed at the lower end of the south end of the light emitting portion side casing 52, and the light emitting portion 8 is provided at the lower end. That is, the light emission part 8 is installed at the lower end of the end part on the south side of the light emission part side casing 52 so as to close the opening 521.

  The light emitting unit 8 is installed on the ceiling 282. That is, an opening is formed in a portion corresponding to the light emitting portion 8 of the ceiling 282 of the chamber 34, and the light emitting portion 8 slightly protrudes into the chamber 34 from the opening. Moreover, the light emission part 8 is arrange | positioned in the vicinity of the inner wall part 281 of the north side.

  Moreover, the light emission part 8 is comprised with the member (light transmissive member) which has a light transmittance, and optical components, such as a diffuser plate which diffuses light.

  In addition, the position of the light emission part 8 is not limited to the said position. That is, the light emission part 8 may be installed, for example, in the toilet space 43 (the fuselage space 40), the inner wall space 46, the inner wall part 281 on the north side, the chamber 34, and the like. Moreover, the light emission part 8 may be installed ranging over the space 43 and the chamber 34 across two or more parts, for example.

  Moreover, the light emission part 8 may be provided like indirect illumination. In this case, for example, a recess (step) may be provided at the end of the ceiling 282 (near the inner wall 281), and the light emitting unit 8 may be installed in the recess.

  The light guide means 7 is composed of a plurality of reflecting plates (reflecting surfaces), in the present embodiment, five reflecting plates (reflecting surfaces) 71 to 75, and these reflecting plates 71 to 75 are each a casing. 5 is installed.

  In this case, the reflecting plate (first reflecting surface) 71, the reflecting plate (second reflecting surface) 72, and the reflecting plate (third reflecting surface) 73 are respectively installed in the daylighting section side casing 51. ing. That is, the reflecting plate 71 is installed on the west inner surface of the lighting unit side casing 51, and the reflecting plate 72 is installed on the east side inner surface of the lighting unit side casing 51. And the reflecting plate 73 is installed in the inner surface of the lower side (vertical direction lower side) of the lighting part side casing 51, and this reflective surface 73 is between the reflective surface 71 and the reflective surface 72 along an east-west direction. It is extended (arranged).

  Moreover, the reflecting plate 74 and the reflecting plate 75 are each installed in the light emission part side casing 52. That is, the reflecting plate 74 is installed on the upper inner surface of the light emitting unit side casing 52, and the reflecting plate 75 is an inner surface between the light emitting unit 8 and the reflecting plate 73 on the lower side of the light emitting unit side casing 52. Is installed.

  In addition, as mentioned above, the lighting part side casing 51 in which the reflecting plates 71, 72, and 73 are housed in the housing 5 is located outside the house 10, and the reflecting plates 74 and 75 are housed therein. The light emission part side casing 52 is located inside the house 10.

  As each of the reflecting plates 71 to 75, it is preferable to use one having a reflecting surface with high reflectivity. Specifically, the reflectance of the reflecting surfaces of the reflecting plates 71 to 75 is preferably 95% or more, and more preferably 98% or more. Moreover, as a constituent material of the reflecting plates 71 to 75 (a constituent material of the reflecting surfaces of the reflecting plates 71 to 75), for example, a metal material such as aluminum or an aluminum alloy can be used.

  By using the reflecting plates 71 to 75 having a reflecting surface with high reflectivity, loss of sunlight guided by them can be suppressed, and sunlight can be guided efficiently.

  Here, the housing 5 may have light-transmitting properties, may have light-shielding properties, a part thereof has light-transmitting properties, and the remaining part has light-shielding properties. It may be. However, the wall portion 512 on the north side of the daylighting portion side casing 51 of the housing 5 preferably has a light shielding property, and a reflection plate (reflection surface) is preferably provided on the inner surface of the wall portion 512. Thereby, the light collected by the lighting unit 6 can be reflected by the reflecting plate and guided to the light emitting unit 8, and the loss of light can be further suppressed.

  Further, a reflection plate (reflection surface) may be provided on the inner surface of the wall portion 513 on the south side of the daylighting portion side casing 51. Thereby, the light collected by the lighting unit 6 can be reflected by the reflecting plate and guided to the light emitting unit 8, and the loss of light can be further suppressed.

Next, the operation of the light irradiation device 1 will be described.
In this case, the case where the sun height in the morning and evening is relatively low, and the time when the sun height in the morning and afternoon are relatively high will be described.

  As shown in FIGS. 2 and 3, in the morning, that is, when the sun is located on the east side and the height of the sun is relatively low, the sunlight is emitted from the first plate-like portion 61 of the daylighting portion 6. The light is collected in the irradiation device 1. The sunlight collected from the east side by the lighting unit 6 is reflected by the reflecting surface of the reflecting plate 71 (hereinafter simply referred to as “reflecting plate”) toward the reflecting plate 73, and the reflected light is reflected by the reflecting plate 73. Reflected toward the reflecting plate 74 (reflected toward the inside of the house 10), the reflected light is reflected by the reflecting plate 74 toward the light emitting unit 8 and guided to the light emitting unit 8 to emit light. The sunlight is emitted into the chamber 34 by the unit 8. Thereby, the inside of the chamber 34 is illuminated and brightened.

  Moreover, as shown in FIG. 4, when the sun is located on the west side in the evening and the height of the sun is relatively low, the sunlight is emitted from the second plate-like portion 62 of the daylighting unit 6 to the light irradiation device 1. Within the daylight. The sunlight collected from the west side in the daylighting unit 6 is reflected by the reflecting plate 72 toward the reflecting plate 73, and the reflected light is reflected by the reflecting plate 73 toward the reflecting plate 74 (inside the house 10). The reflected light is reflected by the reflector 74 toward the light emitting unit 8 and guided to the light emitting unit 8, and the sunlight is emitted into the chamber 34 by the light emitting unit 8. The

  Further, as shown in FIG. 5, when the morning sun is relatively high, the sunlight is collected from the first plate-like portion 61 of the daylighting unit 6 into the light irradiation device 1. The sunlight collected from the east side in the daylighting unit 6 is reflected by the reflecting plate 73 toward the reflecting plate 74 (reflected toward the inside of the house 10), and the reflected light is emitted by the reflecting plate 74. The light is reflected toward the light 8 and guided to the light emitting unit 8, and the sunlight is emitted into the chamber 34 by the light emitting unit 8.

  Although not illustrated, when the afternoon sun is relatively high, the sunlight is collected into the light irradiation device 1 from the second plate-like portion 62 of the daylighting unit 6. The sunlight collected from the west side in the daylighting unit 6 is reflected by the reflecting plate 73 toward the reflecting plate 74 (reflected toward the inside of the house 10), and the reflected light is emitted by the reflecting plate 74. The light is reflected toward the light 8 and guided to the light emitting unit 8, and the sunlight is emitted into the chamber 34 by the light emitting unit 8.

  As described above, according to the light irradiation device 1, for example, it is not necessary to route (arrange) the light guide means 7 to the housing space 40 or the hut space 41 on the south side, and the light irradiation device 1 is installed. It is possible to reduce restrictions on doing so.

  Moreover, according to this light irradiation apparatus 1, the length of the light guide means 7 can be shortened (the light guide means 7 can be comprised compactly), and the whole apparatus can be reduced in size. In addition, since the length of the light guide unit 7 can be shortened, the number of times of light reflection in the light guide unit 7 until the light collected by the light collecting unit 6 reaches the light emitting unit 8 can be reduced. As a result, light attenuation can be suppressed, and the light collected can be efficiently irradiated into the chamber 34.

  Further, by collecting sunlight from the east side, the interior of the room 34 can be illuminated brightly in the morning when the interior of the room 34 is relatively dark during the daytime.

  Further, by collecting sunlight from the west, the interior of the room 34 can be illuminated brightly in the evening when the interior of the room 34 is relatively dark during the daytime.

  Moreover, since the light irradiation apparatus 1 is unitized, the light irradiation apparatus 1 can be easily transported, and the installation work (attachment work) to the house 10 can be easily and quickly performed.

  Here, in this embodiment, although the light irradiation apparatus 1 was provided in the two-story house 10, the example of a structure in the case of irradiating sunlight in the room 34 of the north side of the first floor (light emission) was demonstrated. In this invention, not only this but the building which provides a light irradiation apparatus may be a 3rd floor or more building. In other words, in the present invention, the daylighting section is substantially north of the a (provided that 2 ≦ a) floor building and is perpendicular to the ceiling of the b + 1 (provided that 1 ≦ b ≦ a−1) floor. What is necessary is just to be provided in the lower side. And the light emission part should just be provided in the predetermined | prescribed room of the b floor of the said building. However, the b floor is preferably the a-1 floor. That is, the b + 1 floor is preferably the a floor. Moreover, it is preferable that the lighting part 6 is located in the vicinity of the floor of the said b + 1 floor. The same applies to the second and third embodiments described later.

  Next, the second embodiment of the light irradiation apparatus of the present invention will be described. The description will focus on the differences from the first embodiment described above, and the description of the same matters will be omitted.

FIG. 6 is a cross-sectional view showing a second embodiment of the light irradiation apparatus of the present invention.
In FIG. 6, the vertical direction is the vertical direction, and the direction (azimuth) of east, west, south, and north is indicated by arrows in the drawing.
For convenience of explanation, in FIG. 6, the upper side is described as “upper” and the lower side is described as “lower”.

  As shown in FIG. 6, the light irradiation device 1 of the second embodiment is configured by one or more light emitting diodes (LEDs) 9 and an unillustrated driving device that drives the light emitting diodes 9 as an artificial light source. It has artificial light irradiation means. This artificial light irradiating means drives the light emitting diode 9 by a driving device, and radiates light (artificial light) emitted from the light emitting diode 9 into the chamber 34 from the light emitting portion 8 as an auxiliary.

  In the present embodiment, the light emitting diode 9 is provided in the light emitting portion 8. In this case, it is preferable that one light-emitting diode 9 or an assembly of a plurality of light-emitting diodes 9 is located at a substantially central portion of the light-emitting portion 8. Needless to say, the arrangement of the light emitting diodes 9 is not limited to this.

  According to this light irradiation apparatus 1, the same effect as the light irradiation apparatus 1 of 1st Embodiment mentioned above is acquired.

  And since this light irradiation apparatus 1 has the light emitting diode 9, it can irradiate light in the chamber 34 via the light emission part 8 by making the light emitting diode 9 light-emit as needed. For this reason, for example, even when the amount of sunlight is small (illuminance is low) such as rainy weather or cloudy weather, the room can be illuminated brightly, and only light of a desired wavelength (wavelength region) can be supplemented.

  Further, since the light-emitting diode 9 is small in size, the light-shielding area of sunlight by the light-emitting diode 9 is small. For this reason, one light-emitting diode 9 or an assembly of a plurality of light-emitting diodes 9 Even if it arrange | positions to, the influence by sunlight being interrupted | blocked by the light emitting diode 9 (it will be light-shielded) is very few (almost).

  This second embodiment can also be applied to third and fourth embodiments described later.

  Next, the third embodiment of the light irradiation apparatus of the present invention will be described, focusing on the differences from the first embodiment described above, and description of similar matters will be omitted.

FIG. 7 is a perspective view showing a third embodiment of the light irradiation apparatus of the present invention.
In FIG. 7, the light irradiation device is schematically illustrated as if each internal reflection plate that cannot be seen from the outside is visible. In order to easily distinguish each reflecting plate from other portions, each reflecting plate is hatched.

Moreover, in FIG. 7, the up-down direction is a vertical direction, and the directions (directions) of east, west, south, and north are indicated by arrows in the drawing.
For convenience of explanation, in FIG. 7, the upper side is described as “upper” and the lower side is described as “lower”.

  As shown in FIG. 7, in the light irradiation apparatus 1 of 3rd Embodiment, the light guide means 7 is comprised by seven reflective plates (reflective surface) 71-77. The reflection plate 76 is installed on the west inner surface of the light emission unit side casing 52 of the housing 5, and the reflection plate 77 is installed on the east side inner surface of the light emission unit side casing 52. The arrangement of the reflectors 71 to 75 is the same as that in the first embodiment described above.

  According to this light irradiation apparatus 1, the same effect as the light irradiation apparatus 1 of 1st Embodiment mentioned above is acquired.

  And in this light irradiation apparatus 1, the sunlight collected through the lighting part 6 can be guided to the light emission part 8 as follows, and can be light-emitted in the chamber 34.

  That is, as shown in FIG. 7, sunlight collected from the west side in the lighting unit 6 is reflected by the reflecting plate 73 toward the reflecting plate 77 (reflected toward the inside of the house 10), and the reflected light is Reflected by the reflecting plate 77 toward the reflecting plate 74, the reflected light is reflected by the reflecting plate 74 toward the light emitting unit 8 and guided to the light emitting unit 8, and the sunlight is emitted by the light emitting unit 8. Is emitted into the chamber 34.

  Although not shown, the sunlight collected from the east side by the daylighting unit 6 is reflected by the reflecting plate 73 toward the reflecting plate 76 (reflected toward the inside of the house 10), and the reflected light is reflected by the reflecting plate. The reflected light is reflected by the reflecting plate 74 toward the reflecting plate 74, and the reflected light is reflected by the reflecting plate 74 toward the light emitting unit 8 and guided to the light emitting unit 8. Light is emitted inside.

  Next, the fourth embodiment of the light irradiation apparatus of the present invention will be described. The description will focus on the differences from the first embodiment described above, and the description of the same matters will be omitted.

FIG. 8 is a cross-sectional view showing a fourth embodiment of the light irradiation apparatus of the present invention.
In addition, in FIG. 8, the up-down direction is a vertical direction, and the directions (directions) of east, west, south, and north are indicated by arrows in the drawing.
For convenience of explanation, in FIG. 8, the upper side is described as “upper” and the lower side is described as “lower”.

  As shown in FIG. 8, in the light irradiation device 1 according to the fourth embodiment, the light emitting unit 8 is provided on the floor 273 of the room 33 on the second floor of the house 10.

  An opening 522 is formed at the upper end of the south end of the light emitting part side casing 52 of the housing 5, and the light emitting part 11 is installed so as to close the opening 522. Yes. The emission part 11 is configured by a plate (light transmission member) having light transmittance.

  Further, the reflecting plate 74 is disposed so as not to block the emitting portion 11, and the reflecting plate 75 is disposed up to the tip on the south side of the light emitting portion side casing 52.

  Next, the effect | action of this light irradiation apparatus 1 is demonstrated. In this case, the case where the morning sun is relatively low will be described as a representative.

  As shown in FIG. 8, in the morning, that is, when the sun is located on the east side and the height of the sun is relatively low, the sunlight is emitted from the first plate-like portion 61 of the daylighting unit 6 to the light irradiation device 1. Within the daylight. The sunlight collected from the east side by the lighting unit 6 is reflected by the reflecting plate 71 toward the reflecting plate 73, and the reflected light is reflected by the reflecting plate 73 toward the reflecting plate 74 (inside the house 10). The reflected light is reflected by the reflecting plate 74 toward the reflecting plate 75, and the reflected light is reflected by the reflecting plate 75 toward the emitting portion 11 and transmitted through the emitting portion 11. The light is guided to the light emitting unit 8, and the sunlight is emitted into the chamber 33 by the light emitting unit 8. As a result, the interior of the chamber 33 is illuminated and brightened.

  According to this light irradiation apparatus 1, the same effect as the light irradiation apparatus 1 of 1st Embodiment mentioned above is acquired.

  Here, in this embodiment, although the light irradiation apparatus 1 was provided in the two-story house 10, the example of a structure in the case of irradiating sunlight in the room 33 of the north side of the second floor (light emission) was demonstrated, In this invention, not only this but the building which provides a light irradiation apparatus may be a 3rd floor or more building. In other words, in the present invention, the daylighting section is substantially north of the a (provided that 2 ≦ a) floor building and is perpendicular to the ceiling of the b + 1 (provided that 1 ≦ b ≦ a−1) floor. What is necessary is just to be provided in the lower side. And the light emission part should just be provided in the floor of the predetermined room of the said b + 1 floor of a building. However, it is preferable that the lighting part 6 is located in the vicinity of the floor of the said b + 1 floor.

  As mentioned above, although the light irradiation apparatus of this invention was demonstrated based on embodiment of illustration, this invention is not limited to this, The structure of each part is substituted by the thing of the arbitrary structures which have the same function. can do. In addition, any other component may be added to the present invention.

  Further, the present invention may be a combination of any two or more configurations (features) of the above embodiments.

It is sectional drawing which shows schematic structure of the house as a building in which 1st Embodiment of the light irradiation apparatus of this invention was provided. It is sectional drawing which shows the light irradiation apparatus shown in FIG. It is a perspective view which shows the light irradiation apparatus shown in FIG. It is a perspective view which shows the light irradiation apparatus shown in FIG. It is a perspective view which shows the light irradiation apparatus shown in FIG. It is sectional drawing which shows 2nd Embodiment of the light irradiation apparatus of this invention. It is a perspective view which shows 3rd Embodiment of the light irradiation apparatus of this invention. It is sectional drawing which shows 4th Embodiment of the light irradiation apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light irradiation apparatus 10 House 20 Housing 21 Roof part 22 Outer wall part 23 Heat insulating material 24 Base part 251,261,271,281 Inner wall part 252,262,272,282 Ceiling 253,263,273,283 Floor 31,32, 33, 34 rooms 40 Housing space 41 Hut space 42 Underfloor space 43 Floating space 44, 45, 46 Inner wall space 5 Housing 51 Lighting section side casing 511 Opening 512, 513 Wall section 52 Light emitting section side casing 521, 522 Opening 6 Daylighting part 61 1st plate-like part 62 2nd plate-like part 7 Light guide means 71-77 Reflector 8 Light emission part 9 Light emitting diode 11 Output part

Claims (14)

a (provided that 2 ≦ a) the building is approximately north side of the building, and is provided vertically below the ceiling of the b + 1 (provided that 1 ≦ b ≦ a−1) floor, Or a daylighting unit that can daylight from approximately the west side,
A light emitting part that is provided in a predetermined room on the b floor of the building and emits sunlight collected through the daylighting part into the room;
A light irradiation apparatus comprising: a plurality of reflecting surfaces; and a light guide unit configured to guide sunlight from the daylighting unit to the light emitting unit.   The light irradiation apparatus according to claim 1, wherein the b floor is the a-1 floor. a (provided that 2 ≦ a) the building is approximately north side of the building, and is provided vertically below the ceiling of the b + 1 (provided that 1 ≦ b ≦ a−1) floor, Or a daylighting unit that can daylight from approximately the west side,
A light emitting part that is provided on a floor of a predetermined room on the b + 1 floor of the building, and emits sunlight collected through the daylighting part into the room;
A light irradiation apparatus comprising: a plurality of reflecting surfaces; and a light guide unit configured to guide sunlight from the daylighting unit to the light emitting unit.   The said daylighting part is a light irradiation apparatus in any one of Claim 1 thru | or 3 located in the vicinity of the floor of the said b + 1 floor. Having a housing,
The light guide means includes a first reflecting surface provided on an inner surface of a substantially west side of the housing;
A second reflecting surface provided on the inner surface of the housing on the substantially east side;
The light irradiation apparatus according to claim 1, further comprising a third reflecting surface provided on an inner surface of the casing on a lower side in a vertical direction. In the light guide unit, sunlight collected from the substantially east side in the daylighting part is reflected by the first reflecting surface toward the third reflecting surface, and the reflected light is reflected by the third reflecting surface. And reflect towards the inside of the building,
Sunlight collected from substantially the west side in the daylighting part is reflected by the second reflecting surface toward the third reflecting surface, and the reflected light is reflected by the third reflecting surface inside the building. The light irradiation apparatus of Claim 5 comprised so that it may reflect toward.   The light irradiation apparatus according to claim 5 or 6, wherein the third reflection surface is provided along a substantially east-west direction between the first reflection surface and the second reflection surface.   The light irradiation apparatus according to any one of claims 5 to 7, wherein the casing has a light-shielding wall portion on a substantially north side thereof.   The light irradiation device according to claim 5, wherein the daylighting unit is provided on an upper side in the vertical direction of the housing. The daylighting portion has a first plate-like portion having light transmittance inclined toward the east side so that the east side is lowered from the central portion in the substantially east-west direction, and the west side is lowered from the central portion. And a second plate-shaped portion inclined substantially toward the west side,
The light irradiation according to claim 9, wherein sunlight is collected from substantially the east side through the first plate-like portion, and sunlight is collected from substantially the west side through the second plate-like portion. apparatus.   The light irradiation apparatus according to claim 10, wherein an angle formed by the first plate-like portion and the second plate-like portion is set to be larger than 90 °.   A portion of the housing in which the first reflection surface, the second reflection surface, and the third reflection surface are accommodated is provided on an outer surface of an outer wall portion on a substantially north side of the building. The light irradiation apparatus according to claim 5.   The artificial light irradiation means which has an artificial light source, drives the artificial light source, and irradiates artificial light emitted from the artificial light source into the room from the light emitting unit as an auxiliary means. The light irradiation apparatus of crab. The light irradiation apparatus according to claim 13, wherein the artificial light source is a light emitting diode.

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